George b



(No Model.)

G, B. SNQW.l RBGULATING VALVE FOR GASBURNERS.

No. 332,566. `Patemwa May 8,18385 NA PETERS, Pholmlihagnphur, Waxhngkw. D. C.

NITED STATES ATENT risica.

GEORGE B. SNOW, OF BUFFALO, NEW YORK.

REGULATING-VALVEy FOR GAS-BURNERS.

SPECIFICATION forming part of Letters Parent Nojsaases, dated' 'May 8,1888.

Application filed April 6, 1R87. Serial No. 233.886. (No model.)

To all whom imag concern.'

This invention relates to the proper admis' sion of inflammable gases or vapors into burners, in which they are used as fuel, and the mixture therewith of a sufficient quantity of air to produce a clear, smokeless, non-luminous ame during combustion. It is more especially applicable to the mixture of gasolinevapor and air produced in s'o-called gas-mw chines,7 which is .much used in country -houses andplaces remote from a supply of coal-gas for illumination. When the'storage` tank forming part of one of these gas-machines is freshly lled with gasoline, a very abundant supply of vapor is given off, andthe so-called gas7 produced by the machine is very rich, affording alarge,very luminous dame,

which smokes easily, and which, if it is to be burned as a fuel, requires the further mixture with it of a very considerable quantity of air to produce the clear.` blue smokeless 'flame most suitable vfor heating purposes. After a time the more Volatile portions of the gasoline pass off, and the residue affords less and less vapor, until at last it fails to give a proper light, and afresh addition of gasoline is re quired. A special construction of illuminating-burner is necessary to obtain a good light under these varying conditions, and several .patents are extant on devices calculated to `.compass this end.

The present invention consists in applying an efficient adjustment to heating-burners for the purpose of rendering them equally efficient whether the gas-fuel be rich or poor.

In the accompanying drawings, A is a valvey casing; B, a valve, with its screwed stem b operating 1n a nut, a, which also serves to retain ,of any suitable gasburner.

packing Pin the casing A to prevent leakage around the valveB or its stem b. The gas enters by the passage O into anv annular chamber, o, formed in the casing A and encircling the valve B. lits tightly against the side of the chamber o, which forms the seat of the valve, which, so far as it has been described, resembles closely in construction the ordinary globe-valve.

C represents a mixingtube forming a part Air enters this tube at the opening o, and is carried along by a jet of gas proceeding from the valve casing A, which traverses the center of the mixing-tube and becomes gradually mixed with the current of air it produces as it passes along thetnbe to.

the burner.

If the gas or the mixture of gasoline-vapor and air used as a fuel is rich, burningwith a smoky llame, the opening from which-it escapes from the valve-casing A into the mixing-tube C should be small, so that a large pro# portion of air shall be mixed with the gas in the Vtube and the tlametherefrom be blue and smokeless. If the gas is poor or deficienty in carbon, the opening for its escape should be larger.

To'afford a convenient means of varying the size of the gas-jet and for insuring the proper ame under all circumstances, I attach tothe Valve B a tubular stem, F. This is large enough to completely fill the escape-opening D in the valve-casing when the valve is closed Por nearly so. The central passage, E, in the stem F communicates by side holes, e e, with the space around the stem F, so that when the valve Brirst leavesits seat the gas will pass out through the passage E only, forming a jet of small diameter in the mixing-tube, producing aproper mixture for a blue flame with the richest gas theburner is likely t o use. The short longitudinal bearingof the end of the stem F in the escape-hole D allows the valve to be opened sufficiently to produce a strong jet from the orifice If the valve is farther opened, a part of the gas escapes aroundthe end of `the'stemd?, its withdrawal forming an annular opening between it and the hole D, and the gas escaping will be drawn into and form part of the jet from the opening E. When the valve B is fully open, the stem F is so far withdrawn as to leave the opening D fully open, forming ajet in the mixing-tube C of a size suitable for producing a proper mixture with the poorest gas the burner is likely to use.

It is apparent that for agrade of gas between the richest and poorest a proper adjustment can be made by partially opening the valve B and partially withdrawing the stem F, allowing a partial escape of the gas around it.

I am aware that a conical point, sometimes termed a need1e-valve,7 has been used in vapor-burners for varying the area ofthe opening of escape; but I ani not aware that the peculiar arrangement of parts hereinbefore set forth has been used.

Without a strong central jet the escapinggas often fails to traverse the center of the mixing-tube, the current sometimes even striking its side, in which case the requisite amount of air is not drawn in at the opening c.

The stem F may be made and operated independently of the valve B, which may be omitted and an ordinary throttle placed at any convenient place in the supply-pipe.

This means for regulating the size of the escaping jet, while especially designed for use with gasoline-gas, may be used with good elfect with ordinary coal-gas, as it will remedy the fault of burners with a plain unchangeable jet of giving a better iiame when the gas is full on than when it ispartially turned off. If properly proportioned and constructed, my device will insure an even quality of Haine whatever the size within the limits of the burners capacity.

I claim as my invention- 1. The combination, in aheating-gas burner, 0f a mixing-tube, a valve-casing, a shut-off valve, a perforated tubular stem connected to said valve and provided with a central pas sage, and an opening, D, smaller than the interior of the valve-casing, in which the tubular stem has a cylindrical Iit, whereby the flow 0f gas through the opening D is regulated, substantially as described.

2. In a heating-gas burner, the combination of a mixing-tube, a valve-casing extended into the mixing-tube and provided with the escapeopening I), a shutoi valve, a tubular stem connected therewith and provided with the passage E and orifices e, said stem being arranged in the casing to leave a space around it and having a cylindrical t in the escapeopening, whereby when the valve is opened a jet of gas will pass into the mixing-tube from the central passage, E, and also from the space around the tubular stem, substantially as de scribed.

GEORGE B. SNO\V.

Witnesses:

JOHN E. Ronin, WILLIAM GRAM, .T r. 

